<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
    <script src="../jquery/jquery-3.2.1.min.js"></script>
    <script src="../js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="../css/bootstrap.css">

</head>
<body>

<div class="container">

    <div class="h1">Boostrap 中的h1</div>
    <div class="h2">Boostrap 中的h2</div>
    <div class="h3">Boostrap 中的h3</div>
    <div class="h4">Boostrap 中的h4</div>
    <div class="h5">Boostrap 中的h5</div>

</div>

</body>
</html>